1. The option grant was approved by a committee of Aptevo Therapeutics Inc.'s board of directors on February 22, 2017, subject to stockholder approval of the Amended and Restated 2016 Stock Incentive Plan (the "Plan") under which the option was granted. Aptevo Therapeutics Inc.'s stockholders approved the Plan on May 31, 2017.

2. The option vests in three equal annual installments beginning on June 1, 2018.

Remarks:

Title - SVP, Research and Non-Clinical Development

/s/ Benjamin J. Stein, attorney-in-fact

06/01/2017

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).